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Specifications Comparison: 2018 GMC Sierra 1500 vs 2020 GMC Sierra 1500

Researched By The AutoPadre Staff

Gas Mileage

2018 GMC Sierra 1500

Fuel Mileage (Imp.)

Trim Eng. Drive train MPG City MPG Hwy MPG Combined
1500 Crew Cab4.3L V6RWD162319.5
1500 Crew Cab4.3L V64WD162219
1500 Crew Cab Denali5.3L V8RWD152118
1500 Crew Cab Denali5.3L V84WD152017.5
1500 Crew Cab SLE4.3L V6RWD162319.5
1500 Crew Cab SLE4.3L V64WD162219
1500 Crew Cab SLT5.3L V8RWD182421
1500 Crew Cab SLT5.3L V84WD162118.5
1500 Crew Cab SLT eAssist5.3L V8RWD182421
1500 Crew Cab SLT eAssist5.3L V84WD162118.5
1500 Extended Cab4.3L V6RWD162319.5
1500 Extended Cab4.3L V64WD162219
1500 Extended Cab SLE4.3L V6RWD162319.5
1500 Extended Cab SLE4.3L V64WD162219
1500 Extended Cab SLT5.3L V8RWD152118
1500 Extended Cab SLT5.3L V84WD152017.5
1500 Regular Cab4.3L V6RWD162319.5
1500 Regular Cab4.3L V64WD162219
1500 Regular Cab SLE4.3L V6RWD162319.5
1500 Regular Cab SLE4.3L V64WD162219

2020 GMC Sierra 1500

Fuel Mileage (Imp.)

Trim Eng. Drive train MPG City MPG Hwy MPG Combined
1500 Crew Cab 147" AT45.3L V84WD162118.5
1500 Crew Cab 157" AT45.3L V84WD162118.5
1500 Double Cab 147" AT45.3L V84WD162118.5
1500 Crew Cab 147"4.3L V6RWD162118.5
1500 Crew Cab 157"4.3L V6RWD162118.5
1500 Double Cab 147"4.3L V6RWD162118.5
1500 Reg Cab 140"4.3L V6RWD162118.5
1500 Crew Cab 147"4.3L V64WD152017.5
1500 Crew Cab 157"4.3L V64WD152017.5
1500 Double Cab 147"4.3L V64WD152017.5
1500 Reg Cab 140"4.3L V64WD152017.5
1500 Crew Cab 147" Denali5.3L V8RWD172320
1500 Crew Cab 157" Denali5.3L V8RWD172320
1500 Crew Cab 147" Denali5.3L V84WD162219
1500 Crew Cab 157" Denali5.3L V84WD162219
1500 Crew Cab 147" Elevation2.7LRWD202321.5
1500 Crew Cab 157" Elevation2.7LRWD202321.5
1500 Double Cab 147" Elevation2.7LRWD202321.5
1500 Crew Cab 147" Elevation2.7L4WD192220.5
1500 Crew Cab 157" Elevation2.7L4WD192220.5
1500 Double Cab 147" Elevation2.7L4WD192220.5
1500 Crew Cab 147" SLE2.7LRWD202321.5
1500 Crew Cab 157" SLE2.7LRWD202321.5
1500 Double Cab 147" SLE2.7LRWD202321.5
1500 Crew Cab 147" SLE2.7L4WD192220.5
1500 Crew Cab 157" SLE2.7L4WD192220.5
1500 Double Cab 147" SLE2.7L4WD192220.5
1500 Crew Cab 147" SLT5.3L V8RWD172320
1500 Crew Cab 157" SLT5.3L V8RWD172320
1500 Double Cab 147" SLT5.3L V8RWD172320
1500 Crew Cab 147" SLT5.3L V84WD162219
1500 Crew Cab 157" SLT5.3L V84WD162219
1500 Double Cab 147" SLT5.3L V84WD162219
1500 Crew Cab4.3L V6RWD192220.5
1500 Crew Cab4.3L V64WD192220.5
1500 Crew Cab AT45.3L V84WD151917
1500 Crew Cab Denali5.3L V8RWD233026.5
1500 Crew Cab Denali5.3L V84WD152017.5
1500 Crew Cab Elevation2.7LRWD233026.5
1500 Crew Cab Elevation2.7L4WD222624
1500 Crew Cab SLE2.7LRWD233026.5
1500 Crew Cab SLE2.7L4WD222624
1500 Crew Cab SLT5.3L V8RWD233026.5
1500 Crew Cab SLT5.3L V84WD152017.5
1500 Extended Cab4.3L V6RWD192220.5
1500 Extended Cab4.3L V64WD192220.5
1500 Extended Cab AT45.3L V84WD151917
1500 Extended Cab Elevation2.7LRWD233026.5
1500 Extended Cab Elevation2.7L4WD222624
1500 Extended Cab SLE2.7LRWD233026.5
1500 Extended Cab SLE2.7L4WD222624
1500 Extended Cab SLT5.3L V8RWD233026.5
1500 Extended Cab SLT5.3L V84WD152017.5
1500 Regular Cab4.3L V6RWD152118
1500 Regular Cab4.3L V64WD152017.5

2018 GMC Sierra 1500

Fuel Mileage (Metric)

Trim Eng. Drive train L/100km City L/100km Hwy L/100km Combined
1500 Crew Cab4.3L V6RWD15.010.012.0
1500 Crew Cab4.3L V64WD15.011.012.0
1500 Crew Cab Denali5.3L V8RWD16.011.013.0
1500 Crew Cab Denali5.3L V84WD16.012.013.0
1500 Crew Cab SLE4.3L V6RWD15.010.012.0
1500 Crew Cab SLE4.3L V64WD15.011.012.0
1500 Crew Cab SLT5.3L V8RWD13.010.011.0
1500 Crew Cab SLT5.3L V84WD15.011.013.0
1500 Crew Cab SLT eAssist5.3L V8RWD13.010.011.0
1500 Crew Cab SLT eAssist5.3L V84WD15.011.013.0
1500 Extended Cab4.3L V6RWD15.010.012.0
1500 Extended Cab4.3L V64WD15.011.012.0
1500 Extended Cab SLE4.3L V6RWD15.010.012.0
1500 Extended Cab SLE4.3L V64WD15.011.012.0
1500 Extended Cab SLT5.3L V8RWD16.011.013.0
1500 Extended Cab SLT5.3L V84WD16.012.013.0
1500 Regular Cab4.3L V6RWD15.010.012.0
1500 Regular Cab4.3L V64WD15.011.012.0
1500 Regular Cab SLE4.3L V6RWD15.010.012.0
1500 Regular Cab SLE4.3L V64WD15.011.012.0

2020 GMC Sierra 1500

Fuel Mileage (Metric)

Trim Eng. Drive train L/100km City L/100km Hwy L/100km Combined
1500 Crew Cab 147" AT45.3L V84WD15.011.013.0
1500 Crew Cab 157" AT45.3L V84WD15.011.013.0
1500 Double Cab 147" AT45.3L V84WD15.011.013.0
1500 Crew Cab 147"4.3L V6RWD15.011.013.0
1500 Crew Cab 157"4.3L V6RWD15.011.013.0
1500 Double Cab 147"4.3L V6RWD15.011.013.0
1500 Reg Cab 140"4.3L V6RWD15.011.013.0
1500 Crew Cab 147"4.3L V64WD16.012.013.0
1500 Crew Cab 157"4.3L V64WD16.012.013.0
1500 Double Cab 147"4.3L V64WD16.012.013.0
1500 Reg Cab 140"4.3L V64WD16.012.013.0
1500 Crew Cab 147" Denali5.3L V8RWD14.010.012.0
1500 Crew Cab 157" Denali5.3L V8RWD14.010.012.0
1500 Crew Cab 147" Denali5.3L V84WD15.011.012.0
1500 Crew Cab 157" Denali5.3L V84WD15.011.012.0
1500 Crew Cab 147" Elevation2.7LRWD12.010.011.0
1500 Crew Cab 157" Elevation2.7LRWD12.010.011.0
1500 Double Cab 147" Elevation2.7LRWD12.010.011.0
1500 Crew Cab 147" Elevation2.7L4WD12.011.011.0
1500 Crew Cab 157" Elevation2.7L4WD12.011.011.0
1500 Double Cab 147" Elevation2.7L4WD12.011.011.0
1500 Crew Cab 147" SLE2.7LRWD12.010.011.0
1500 Crew Cab 157" SLE2.7LRWD12.010.011.0
1500 Double Cab 147" SLE2.7LRWD12.010.011.0
1500 Crew Cab 147" SLE2.7L4WD12.011.011.0
1500 Crew Cab 157" SLE2.7L4WD12.011.011.0
1500 Double Cab 147" SLE2.7L4WD12.011.011.0
1500 Crew Cab 147" SLT5.3L V8RWD14.010.012.0
1500 Crew Cab 157" SLT5.3L V8RWD14.010.012.0
1500 Double Cab 147" SLT5.3L V8RWD14.010.012.0
1500 Crew Cab 147" SLT5.3L V84WD15.011.012.0
1500 Crew Cab 157" SLT5.3L V84WD15.011.012.0
1500 Double Cab 147" SLT5.3L V84WD15.011.012.0
1500 Crew Cab4.3L V6RWD12.011.011.0
1500 Crew Cab4.3L V64WD12.011.011.0
1500 Crew Cab AT45.3L V84WD16.012.014.0
1500 Crew Cab Denali5.3L V8RWD10.08.09.0
1500 Crew Cab Denali5.3L V84WD16.012.013.0
1500 Crew Cab Elevation2.7LRWD10.08.09.0
1500 Crew Cab Elevation2.7L4WD11.09.010.0
1500 Crew Cab SLE2.7LRWD10.08.09.0
1500 Crew Cab SLE2.7L4WD11.09.010.0
1500 Crew Cab SLT5.3L V8RWD10.08.09.0
1500 Crew Cab SLT5.3L V84WD16.012.013.0
1500 Extended Cab4.3L V6RWD12.011.011.0
1500 Extended Cab4.3L V64WD12.011.011.0
1500 Extended Cab AT45.3L V84WD16.012.014.0
1500 Extended Cab Elevation2.7LRWD10.08.09.0
1500 Extended Cab Elevation2.7L4WD11.09.010.0
1500 Extended Cab SLE2.7LRWD10.08.09.0
1500 Extended Cab SLE2.7L4WD11.09.010.0
1500 Extended Cab SLT5.3L V8RWD10.08.09.0
1500 Extended Cab SLT5.3L V84WD16.012.013.0
1500 Regular Cab4.3L V6RWD16.011.013.0
1500 Regular Cab4.3L V64WD16.012.013.0

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